10 years ago I took the 2nd photo in this collection. It was a single shot, RAW image taken with a tripod and my Canon 20D.
The top shot was a little more complicated.
it is actually a composite of 6 images, taken with my Canon 5Dmk3, a 24mm Tilt-shift lens again on a tripod. Shooting RAW at 160ASA and F9, The centre exposure was 0.5 second
The -2 Ev exposure was 1/10 second
The +2 Ev exposure was 2.5 seconds
Frames 1,2,3 were with the camera lens shifted to the left - the right of frame was the right corner of the bed, at the exposures above
Frames 4,5,6 were with the camera lens shifted to the right - the left of frame was the left corner of the bed, at the exposures above.
Then the images were combined using enblend software and the panoramic was stitched together using PTgui.
The final image is much closer to what you would see in that room.